# Capillary Rise In Tube

1. Feb 9, 2015

### Joel Jacon

What happen when the capillary rise occur in a tube of insufficient length?

My teacher told me that hR = constant where h is height and R is radius of sphere of which the curved surface of meniscus firm a part.
She also told me that if h become less so R has to increase so radius of meniscus has to be large.

I didn't really get what she's meant.

If we take a capillary tube of height h and put it in water then, the tube become filled with water till height h. Now if we break a tube to make it of height less than h then will water flow out?

Last edited: Feb 9, 2015
2. Feb 9, 2015

### Bystander

This is homework.
How large can the radius become? What does that imply?
Work out the first question and the answer to this becomes obvious.

3. Feb 9, 2015

### Joel Jacon

I told that I didn't understand what the teacher told. Any link on web that explain it would be helpful.
This is not a homework question.

4. Feb 9, 2015

5. Feb 9, 2015

### Joel Jacon

I told that's what my teacher said. If I had known the meaning I wouldn't have asked the question.

6. Feb 9, 2015

### Bystander

7. Feb 12, 2015

### Puma

I can tell that someone has not explained this to you very well, or you were not listening!

All you need to know is that the curves of a meniscus are in effect pulling up the water, they are attracted to the glass. In a small tube the pulling area is a large proportion of the surface area and will be able to pull the water high and vice versa.